CN102603038B - Electrochemical reactor and method for processing organic pollutant in water - Google Patents
Electrochemical reactor and method for processing organic pollutant in water Download PDFInfo
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- CN102603038B CN102603038B CN201210104718.6A CN201210104718A CN102603038B CN 102603038 B CN102603038 B CN 102603038B CN 201210104718 A CN201210104718 A CN 201210104718A CN 102603038 B CN102603038 B CN 102603038B
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Abstract
The invention discloses an electrochemical reactor and a method for processing the organic pollutant in water. The electrochemical reactor comprises a direct-current power supply, an electrolytic bath and an electrode assembly arranged in the electrolytic bath. The electrochemical reactor is characterized in that the electrode assembly mainly comprises an electrode stand, a cathode plate and an anode plate, wherein the electrode stand and the electrolytic bath are in a split structure; the electrode stand comprises two insulated side walls, a cathode conducting bar and an anode conducting bar; the cathode conducting bar and the anode conducting bar are respectively fixed on the bottoms of the inner sides of the two side walls; the opposite inner sides of the two side walls are respectively provided with longitudinal grooves; the cathode plate and the anode plate are inserted in the groove between the two side walls and are arranged at an interval; the lower end of the cathode plate is in contacted connection with the cathode conducting bar; the lower end of the anode plate is in contacted connection with the anode conducting bar; the cathode conducting bar is electrically connected with the cathode of the direct-current power supply; and the anode conducting bar is electrically connected with the anode of the direct-current power supply. The electrochemical reactor disclosed by the invention has the advantages that energy consumption is less, electrocatalytic oxidation effect is good, the electrode is easy to install, and the subsequent electrode and the subsequent electrolytic bath are easy to clean.
Description
Technical field
The present invention relates to a kind of wastewater treatment equipment, be specifically related to a kind of electrochemical reactor and method of processing organic pollutants.
Background technology
The processing of high concentration hard-degraded organic waste water, is the at present domestic and international generally acknowledged difficult problem of sewage disposal circle, although be characterized in that the amount producing is little, concentration is higher, is difficult to biochemical degradation, and the harm that environment is caused is larger.For this class waste water, at present both at home and abroad research is more the professional waste water such as pharmacy waste water, weaving/dyeing waste water, petrochemical industry/oils waste water, wastewater from chemical industry, percolate.The stack of " high density ", " difficult degradation " two large characteristics, makes this type of waste water in processing, uses separately " routine " methods such as biological process or physico-chemical process to lose possibility.So exploitation can effectively be processed, and high concentration hard-degraded organic waste water technology has broad application prospects and good society, economy and environment benefit.
Utilize at present light, sound, electricity, magnetic and other nontoxic reagent catalyzed oxidation technical finesse organic waste water, especially bio-refractory, " three cause " organic pollutant very harmful to the mankind, be the quite active research field of our times water treatment, electro-catalytic oxidation technology is exactly one of hot research field wherein.Electro-catalytic oxidation technology is a kind of and efficient wastewater processing technology environmental compatible, particularly aspect processing bio-refractory organic waste water, is obtaining applying more and more widely.Electro-catalytic oxidation technology is that wastewater treatment has proposed new thinking, the method does not need to add oxygenant, non-secondary pollution, reaction conditions is gentle, have air supporting, flocculation, germicidal action concurrently, be easy to automatization, especially for the processing of difficult for biological degradation toxic wastewater, may become new automated operation, convenient, the stable waste water treatment process of being easy to.
Advantage and the feature of electro-catalytic oxidation technology are not still not fully exerted in actual applications at present, and major cause is that power consumption is higher, and polar plate loss is large, and after equipment work, the accumulation of pole plate soil pick-up increases, throw out difficult treatment.
Mostly electrode plate structure in conventional electrochemical reactor, be some positive plates to weld together, and some negative plates are welded together and form positive and negative electrode group, and positive and negative electrode group is connected with the positive and negative electrode of direct supply again.As a pole plate wherein goes wrong, need to change a whole set of pole plate, modular repair is very difficult.And existing electrode group structure is unfavorable for that positive and negative electrode is as far as possible close, and easily cause positive and negative electrode directly contact and short circuit.Because positive and negative electrode is difficult to close power consumption as far as possible, so power consumption is large, and treatment effect is not good.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, and a kind of energy consumption that is conducive to reduce is provided, be convenient to safeguard, improve the electrochemical reactor of waste water treatment efficiency.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of electrochemical reactor of processing organic pollutants, comprise direct supply, electrolyzer and be arranged on the electrode assemblie in electrolyzer, described electrode assemblie is mainly by arc-spark stand and the moon, positive plate forms, described arc-spark stand and electrolyzer are Split type structure, arc-spark stand comprises the two side of insulation, negative electrode bus and anode conducting bar, described negative electrode bus and anode conducting bar are separately fixed at the inside bottom of two side, on relative inner side, two side, be respectively equipped with the groove of longitudinal setting, cloudy, positive plate is plugged between the groove of two side, the alternate layout of negative plate and positive plate, negative plate lower end is connected with the contact of negative electrode bus, positive plate lower end is connected with the contact of anode conducting bar, negative electrode bus is connected with the negative electricity of direct supply, anode conducting bar is electrically connected to the positive pole of direct supply.
In technique scheme, electrolyzer is upwards extended out respectively to be connected with direct supply in one end of cathode and anode bus.
Further technical scheme, described negative electrode bus and anode conducting bar upper surface are respectively equipped with the serrate slot arranging along bus length direction, negative plate bottom and the relative connection bump that is provided with in serrate slot position on negative electrode bus described in each, described in each bottom positive plate with the relative connection bump that is provided with in serrate slot position on anode conducting bar.By projection and the coordinating of profile of tooth groove, suitably afterburning during installation, assurance pole plate is good with contacting of bus.
In technique scheme, described side plate is concordant with negative electrode bus or anode conducting bar bottom, and every side side plate below connects at least 2 feets, makes to form passage between side plate and bus bottom and electrolyzer bottom surface.The solid sediment that this passage can make electrolytic process produce is deposited to bottom of electrolytic tank; Also can in described passage, be furnished with aeration tube.
In technique scheme, the groove on side plate is uniformly distributed, and the spacing of adjacent trenches is between 5mm～20mm.
A kind of electrochemical reaction method of processing organic pollutants, adopt above-mentioned electrochemical reactor to process, first assemble electrode assemblie, by in the alternate groove that is inserted in successively both sides inwall of yin, yang pole plate, form respectively anode clusters and negative electrode group, yin, yang pole plate is connected with negative electrode bus or the contact of anode conducting bar by self gravitation; The electrode assemblie assembling is put into electrolyzer, form electrochemical reactor; By pump, pending waste water is pumped in electrochemical reactor and carries out electrolysis, direct supply provides Faradaic current to electrochemical reactor, and the waste water after electrolysis is discharged through valve.
In technique scheme, adopt low-voltage electrolysis technology to carry out electrocatalysis oxidation reaction, positive plate adopts dimensional stable anode, and negative plate adopts titanium net, titanium plate or stainless material.
Preferred technical scheme, positive plate adopts ti-supported lead dioxide electric pole, titanium base iridium Ruthenium electrode or titanium base iridium tantalum electrode.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. the present invention is by arranging arc-spark stand and bus, and cathode-anode plate can be inserted in the pole plate pickup groove of arc-spark stand both sides inwall successively, and pole plate pickup groove is used for locating cathode-anode plate, guarantees the position relationship of anode and cathode, forms stable electric field region.Adjacent cathode-anode plate can be fully close, and interelectrode distance is little, and the electrode area holding is large.So energy consumption reduces, catalytic oxidation is effective;
2. the anode conducting bar by arc-spark stand bottom connects a plurality of anodes, negative electrode bus by arc-spark stand bottom connects a plurality of negative electrodes, and electrode fixed form is insert, avoided between anode and anode, the welding connecting mode between negative electrode and negative electrode, so electrode is installed and follow-up electrode clean is all easy to realize;
3. anode and cathode bus is symmetricly set on pole plate bottom, both sides, can exchange polarity.Be that anode conducting bar is done in this electrolysis, during next electrolysis, make negative electrode bus, to the material that on bus last time, oxidation generates is reduced, guarantee the excellent electric contact of bus and pole plate;
4. because electrolyzer and arc-spark stand are separated, after electrolysis, arc-spark stand integral body can be shifted out to slot electrode, be convenient to process throw out at the bottom of cleaning slot;
Spatial arrangement between bottom of electrolytic tank and arc-spark stand aeration tube, by aeration, can make solution fully stir, thereby reduce concentration polarization, alleviate pole plate corrosion.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electrochemical reactor of the embodiment of the present invention one.
Fig. 2 is the floor map of arc-spark stand.
The positive elevational schematic view of Fig. 3 arc-spark stand.
Fig. 4 arc-spark stand side elevation and electrode and bus connection diagram.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment mono-: referring to shown in Fig. 1 to Fig. 4, a kind of electrochemical reactor of processing organic pollutants, comprise direct supply, electrolyzer 3 and be arranged on the electrode assemblie in electrolyzer 3, on electrolyzer 3, be provided with water-in 1 and water outlet 2, described electrode assemblie is mainly by arc-spark stand, negative plate 7 and positive plate 8 form, described arc-spark stand and electrolyzer 3 are Split type structure, arc-spark stand comprises the two side of insulation, negative electrode bus 10 and anode conducting bar 11, described negative electrode bus 10 and anode conducting bar 11 are separately fixed at the inside bottom of two side, on relative inner side, two side, be respectively equipped with the groove 9 of longitudinal setting, groove 9 on side plate is uniformly distributed, the spacing of adjacent trenches 9 is between 5mm～20mm, negative plate 7 and positive plate 8 are plugged in 9 of the grooves of two side, negative plate 7 layout alternate with positive plate 8, negative plate 7 lower ends are connected with 10 contacts of negative electrode bus, positive plate 8 lower ends are connected with 11 contacts of anode conducting bar.Upwards extend out respectively electrolyzer 3 of negative electrode bus 10 and anode conducting Tiao11 one end forms negative electrode group's terminal stud 4 and anode clusters terminal studs 5, so that direct supply is connected, negative electrode bus 10 is connected with the negative electricity of direct supply, and anode conducting bar 11 is electrically connected to the positive pole of direct supply.Described negative electrode bus 10 and anode conducting bar 11 upper surfaces are respectively equipped with the serrate slot arranging along bus length direction, negative plate 7 bottoms and the relative connection bump that is provided with in serrate slot position on negative electrode bus 10 described in each, positive plate 8 bottoms and the relative connection bump that is provided with in serrate slot position on anode conducting bar 11 described in each.
Described side plate is concordant with negative electrode bus 10 or anode conducting bar 11 bottoms, and every side side plate below connects 2 feets, makes to form passage between side plate and bus 6 bottoms and electrolyzer 3 bottom surfaces.In described passage, can arrange aeration tube.
Embodiment bis-: adopt the device of embodiment mono-to carry out Pharmaceutical Wastewater Treatment test
3 times of pharmacy waste water dilutions are placed in electrochemical reactor, and anode adopts ti-supported lead dioxide electric pole, and negative electrode adopts titanium plate electrode, and anode and cathode is respectively with 1, and electrode area is 12cm * 15cm, and cathode and anode spacing is 2cm.Control current density 12mA/cm
2, T=20 ℃, degraded 10h.Result is referring to table 1.
Table 1 Pharmaceutical Wastewater Treatment test-results
As can be seen from Table 1, chemical oxygen demand (COD) (COD) clearance is 60% to waste water after treatment, total phosphorus (TP) clearance approaches 100%, ammonia nitrogen (NH
3-N) clearance is 91% left and right, total nitrogen (TN) clearance 76.3%.SUVA is lower can reflect that aquaticization degradation property is better indirectly, so after electrochemical degradation, the biodegradability of this pharmacy waste water has improved, for subsequent biological treatment is provided convenience.
Embodiment tri-: process wastewater from chemical industry test
Adopt the device of embodiment mono-to process certain wastewater from chemical industry, result is as shown in table 2.3 times of wastewater from chemical industry dilutions are placed in electrochemical reactor to test conditions: anode adopts titanium base iridium tantalum electrode, and negative electrode adopts titanium plate electrode.Anode and cathode area is 12cm * 15cm, and anode is with 8, and negative electrode is with 9, and cathode and anode spacing is 0.5cm, I=20A.Test temperature is 10 ℃, degraded 3h.
Table 2 is processed wastewater from chemical industry test-results
Result shows, device of the present invention can effectively be processed wastewater from chemical industry.
Claims (8)
1. an electrochemical reactor of processing organic pollutants, comprise direct supply, electrolyzer and be arranged on the electrode assemblie in electrolyzer, it is characterized in that: described electrode assemblie is mainly by arc-spark stand and the moon, positive plate forms, described arc-spark stand and electrolyzer are Split type structure, arc-spark stand comprises the two side of insulation, negative electrode bus and anode conducting bar, described negative electrode bus and anode conducting bar are separately fixed at the inside bottom of two side, on relative inner side, two side, be respectively equipped with the groove of longitudinal setting, cloudy, positive plate is plugged between the groove of two side, the alternate layout of negative plate and positive plate, negative plate lower end is connected with the contact of negative electrode bus, positive plate lower end is connected with the contact of anode conducting bar, negative electrode bus is connected with the negative electricity of direct supply, anode conducting bar is electrically connected to the positive pole of direct supply, described negative electrode bus and anode conducting bar upper surface are respectively equipped with the serrate slot arranging along bus length direction, negative plate bottom and the relative connection bump that is provided with in serrate slot position on negative electrode bus described in each, described in each bottom positive plate with the relative connection bump that is provided with in serrate slot position on anode conducting bar.
2. the electrochemical reactor of processing organic pollutants according to claim 1, is characterized in that: one end of cathode and anode bus electrolyzer of upwards extending out respectively, is connected with direct supply.
3. the electrochemical reactor of processing organic pollutants according to claim 1, it is characterized in that: described sidewall is concordant with negative electrode bus or anode conducting bar bottom, every side sidewall below connects at least 2 feets, makes to form passage between sidewall and bus bottom and electrolyzer bottom surface.
4. the electrochemical reactor of processing organic pollutants according to claim 3, is characterized in that: in described passage, be furnished with aeration tube.
5. the electrochemical reactor of processing organic pollutants according to claim 1, is characterized in that: the groove on sidewall is uniformly distributed, and the spacing of adjacent trenches is between 5mm～20mm.
6. an electrochemical reaction method of processing organic pollutants, it is characterized in that: adopt the electrochemical reactor of claim 1 to process, first assemble electrode assemblie, by in the alternate groove that is inserted in successively both sides inwall of yin, yang pole plate, form respectively anode clusters and negative electrode group, yin, yang pole plate is connected with negative electrode bus or the contact of anode conducting bar by self gravitation; The electrode assemblie assembling is put into electrolyzer, form electrochemical reactor; By pump, pending waste water is pumped in electrochemical reactor and carries out electrolysis, direct supply provides Faradaic current to electrochemical reactor, and the waste water after electrolysis is discharged through valve.
7. the electrochemical reaction method of processing organic pollutants according to claim 6, is characterized in that: adopt low-voltage electrolysis technology to carry out electrocatalysis oxidation reaction, positive plate adopts dimensional stable anode, and negative plate adopts titanium net, titanium plate or stainless material.
8. the electrochemical reaction method of processing organic pollutants according to claim 7, is characterized in that: positive plate adopts ti-supported lead dioxide electric pole, titanium base iridium Ruthenium electrode or titanium base iridium tantalum electrode.
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| CN104230062B (en) * | 2014-09-24 | 2016-10-19 | 辽宁工程技术大学 | Ruthenium iridium tin dope electrode electrocatalytic method is used to process the device and method of phenolic waste water |
| CN104233365B (en) * | 2014-10-08 | 2017-06-16 | 林海波 | The electrochemical reactor and preparation method of oligosaccharides are prepared from marine organisms functional sugar |
| CN105198097A (en) * | 2015-09-22 | 2015-12-30 | 苏州市铂瑞工业材料科技有限公司 | Electrode assembly for reducing water hardness |
| FI127029B (en) * | 2015-12-22 | 2017-10-13 | Outotec Finland Oy | ELECTRIC CHEMICAL REACTOR, WATER TREATMENT APPARATUS AND SYSTEM AND METHOD FOR CONTROLLING WATER TREATMENT APPARATUS |
| CN107267891B (en) * | 2017-06-19 | 2018-11-23 | 长沙理工大学 | Cobalt-based amorphous alloy catalytic electrode and production method thereof |
| CN107268018B (en) * | 2017-06-19 | 2019-05-03 | 长沙理工大学 | Iron-based amorphous alloy catalytic electrode and production method thereof |
| CN107267892B (en) * | 2017-06-19 | 2018-11-23 | 长沙理工大学 | Nickel-based amorphous alloy catalytic electrode and production method thereof |
| CN109208025A (en) * | 2017-06-29 | 2019-01-15 | 刘志红 | A kind of manufacturing method of Fe-based amorphous alloy catalytic reactor |
| CN108996618A (en) * | 2018-08-08 | 2018-12-14 | 上海荣德环保工程有限公司 | A kind of novel floating electro-chemical water processing equipment |
| CN109205740A (en) * | 2018-11-22 | 2019-01-15 | 太原工业学院 | A kind of processing method of organic wastewater |
| CN111170413A (en) * | 2019-12-26 | 2020-05-19 | 西安泰金工业电化学技术有限公司 | Titanium electrode advanced catalytic device for improving biodegradability of electroplating wastewater |
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| US4714534A (en) * | 1986-06-20 | 1987-12-22 | Olin Corporation | Electrolytic halogenator device |
| JP3492327B2 (en) * | 2001-03-15 | 2004-02-03 | 学校法人桐蔭学園 | Method and apparatus for generating active oxygen |
| KR100841102B1 (en) * | 2007-06-14 | 2008-06-25 | 주식회사 미래엔지니어링 | An electrolytic water creating device |
| CN201317697Y (en) * | 2008-12-15 | 2009-09-30 | 福州大学 | Novel electrolysis reactor |
| CN201553662U (en) * | 2009-07-30 | 2010-08-18 | 黄振隆 | Industrial waste water treatment machine |
| CA2698880A1 (en) * | 2010-04-01 | 2011-10-01 | Sean Frisky | Method and apparatus for electrocoagulation |
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